United States · 1991–2020

Best time to visit
Pearl City.

January leads for comfortable weather in Pearl City: typically 26.9°C by day, 19.3°C at night, with 46 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high26.9°C

Typical low19.3°C

Rain in January46 mm

Comfort

January

January · February · March

79climate match

Beach

April

April · May · November

97climate match

Outdoors

January

January · February · April

58climate match

The weakest month is August, scoring 59 against January’s 79 — days average 31.5°C, 8° above the 24°C the score treats as ideal, and nights stay at 24.2°C.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

7926.9° / 19.3°

Feb

7827° / 19.5°

Mar

7427.3° / 20.1°

Apr

7428.4° / 21.1°

May

7029.3° / 22°

Jun

6430.5° / 23.2°

Jul

6031.2° / 23.9°

Aug

5931.5° / 24.2°

Sep

6031.3° / 23.8°

Oct

6230.5° / 23.3°

Nov

6629° / 22.1°

Dec

7327.7° / 20.7°

Monthly climate evidence for Pearl City — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 11 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	26.9°C	19.3°C	46 mm	5.1	24.4°C	10 h 57	79	Strong coverage
February	27°C	19.5°C	49 mm	4.9	24.0°C	11 h 25	78	Strong coverage
March	27.3°C	20.1°C	60 mm	5.3	24.0°C	11 h 58	74	Strong coverage
April	28.4°C	21.1°C	19 mm	3.6	24.4°C	12 h 37	74	Strong coverage
May	29.3°C	22°C	21 mm	2.8	25.0°C	13 h 09	70	Strong coverage
June	30.5°C	23.2°C	13 mm	2	25.7°C	13 h 26	64	Strong coverage
July	31.2°C	23.9°C	13 mm	2.6	26.0°C	13 h 19	60	Strong coverage
August	31.5°C	24.2°C	21 mm	2.4	26.5°C	12 h 52	59	Strong coverage
September	31.3°C	23.8°C	21 mm	3.5	26.8°C	12 h 14	60	Strong coverage
October	30.5°C	23.3°C	38 mm	4	26.7°C	11 h 37	62	Strong coverage
November	29°C	22.1°C	57 mm	4.7	26.0°C	11 h 05	66	Strong coverage
December	27.7°C	20.7°C	55 mm	4.9	25.1°C	10 h 50	73	Strong coverage

What has changed

Pearl City runs +0.2°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.5

Feb

+0.4

Mar

0.0

Apr

+0.4

May

0.0

Jun

+0.1

Jul

+0.3

Aug

0.0

Sep

-0.1

Oct

+0.1

Nov

+0.1

Dec

+0.4

January daytime highs, 2011–2025. Last recorded: 28.0°C.

Records at HONOLULU INTL AP, 1940–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	31.1°C21 Jan 1996	11.1°C20 Jan 1969	163 mm7 Jan 1963	339 mm1957 · driest 0 mm in 1944	85
February	31.1°C6 Feb 2023	11.7°C9 Feb 1981	140 mm23 Feb 1955	347 mm1955 · driest 1 mm in 2022	85
March	31.7°C17 Mar 1960	12.8°C13 Mar 1976	389 mm5 Mar 1958	528 mm1951 · driest 0 mm in 1957	86
April	32.8°C28 Apr 1996	13.3°C22 Apr 1958	99 mm14 Apr 1972	227 mm1963 · driest 0 mm in 1944	86
May	33.9°C31 May 1988	15.6°C2 May 1989	87 mm2 May 1965	184 mm1965 · driest 0 mm in 1942	87
June	33.5°C1 Jun 1945	18.3°C7 Jun 1979	107 mm25 Jun 2019	145 mm2019 · driest 0 mm in 1959	86
July	34.4°C15 Jul 1995	18.9°C23 Jul 1955	55 mm20 Jul 1989	69 mm2016 · driest 1 mm in 2026	85
August	35.0°C31 Aug 2019	18.3°C19 Aug 2009	91 mm24 Aug 2015	194 mm2015 · driest 0 mm in 2025	84
September	35.0°C19 Sep 1994	17.8°C22 Sep 2019	35 mm11 Sep 2015	114 mm2015 · driest 1 mm in 1977	85
October	34.4°C6 Oct 1984	16.1°C27 Oct 1993	190 mm30 Oct 1978	283 mm1978 · driest 1 mm in 2021	86
November	33.9°C6 Nov 1986	13.9°C25 Nov 1990	140 mm20 Nov 1940	477 mm1996 · driest 1 mm in 1962	86
December	31.7°C1 Dec 1979	12.2°C20 Dec 1962	201 mm6 Dec 2021	439 mm1987 · driest 0 mm in 2012	86

Typical days per month at HONOLULU INTL AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	29	<1	1
February	27	<1	1
March	29	<1	1
April	30	5	<1
May	31	13	<1
June	30	23	<1
July	31	28	<1
August	31	30	<1
September	30	28	<1
October	31	24	<1
November	30	9	1
December	30	2	1

The best month has moved. On the 1961–1990 numbers the strongest month here was February (scoring 81); on 2011–2025 it is January (79). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in HONOLULU INTL AP’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	81%	19%	6%	17%	25.8–27.7°C
February	81%	20%	5%	18%	25.8–27.9°C
March	82%	18%	4%	15%	26.1–28.4°C
April	86%	14%	2%	10%	27.0–29.1°C
May	90%	10%	2%	6%	27.9–30.2°C
June	94%	6%	<1%	2%	29.0–31.2°C
July	92%	8%	<1%	3%	29.5–31.8°C
August	92%	9%	1%	5%	29.8–32.4°C
September	90%	11%	2%	6%	30.0–32.2°C
October	86%	14%	3%	11%	29.1–31.3°C
November	84%	16%	5%	15%	27.8–30.0°C
December	81%	20%	6%	20%	26.2–28.4°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1943Each stripe is one year’s mean temperature against the 81-year average. Warmest: 2025. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5852275
NOAA station: USW00022521 · HONOLULU INTL AP
Station distance: 9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 21.40°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 11 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from HONOLULU INTL AP is what differs

Waiau-Pacific Palisades→Kalihi-Palama→Joint Base Pearl Harbor Hickam→Aliamanu / Salt Lakes / Foster Village→Airport→Hālawa→

Or put two places side by side: Pearl City vs Waiau-Pacific Palisades

Best time to visitPearl City.

January

April

January

The whole year,without the guesswork.

Pearl City runs +0.2°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Pearl City.

The whole year,
without the guesswork.

Pearl City runs +0.2°C
on the 1961–1990 baseline.

Nearby, measured,
and named.